Methyl 4-cyano-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate
3-(Bromomethyl)-4-cyano-2-nitro-5-(trifluoromethoxy)pyridine
Methyl 4-cyano-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxylate
2-Cyano-3-nitro-5-(trifluoromethoxy)pyridine-6-carboxaldehyde